Data encryption and decryption method, system and device, medium and program product

The invention relates to a data encryption and decryption method, system and device, a medium and a program product, and the method comprises the steps that an encryption and decryption function container receives an encryption/decryption request sent by an application execution container, the encryption and decryption function container and the application execution container are deployed on a node in advance, and the encryption/decryption request comprises data to be encrypted/decrypted; the application execution container comprises an application program, and the encryption and decryption function container comprises a plurality of encryption and decryption algorithms; encrypting/decrypting the encrypted/decrypted data based on a target encryption/decryption algorithm and a preset key, the target encryption/decryption algorithm being selected by the encryption/decryption function container from a plurality of encryption/decryption algorithms according to a pre-configured environment variable; and returning